<!DOCTYPE html>
<html lang="zh">
	<head>
		<meta charset="utf-8">
		<link rel="stylesheet" href="style.css">
		<title>84 动态箭头导航栏</title>
	</head>
	<body>
		<div class="app">
			<nav class="nav84">
				<a href="javascript:;" class="nav-a84">设计</a>
				<a href="javascript:;" class="nav-a84">前端</a>
			</nav>
		</div>
	</body>
</html>